Global Patent Index - EP 1580433 A2

EP 1580433 A2 20050928 - Multistage rotary compressor

Title (en)

Multistage rotary compressor

Title (de)

Mehrstufiger Rotationsverdichter

Title (fr)

Compresseur rotatif multi-étagé

Publication

EP 1580433 A2 20050928 (EN)

Application

EP 05005585 A 20050315

Priority

JP 2004076171 A 20040317

Abstract (en)

The present invention relates to a multistage rotary compressor, in the multistage rotary compressor, a motor-operating element (5) and a rotary compressing element (6) are provided at upper and lower portions in a closed vessel (1). In the rotary compressing element (6), a low stage side rotary compressing element (9) and a high stage side rotary compressing element (11) are positioned on the upper and lower sides respectively. An upper supporting member (12) is attached onto the low stage side rotary compressing element (9), and a substantially cup-shaped cover material (16) is attached onto the upper supporting member (12) to close an opening surface of a muffling chamber (12b) formed in the upper supporting member (12). The substantially cup-shaped cover material (16) is formed in a high dimension so that the upper end of the cover material (16) is positioned at an upper end or near an upper end of a bearing portion (12a) formed in the upper supporting member (12). Further, a discharge hole (16b) for discharging a refrigerant gas is provided in the upper end surface of the cover material (16) near an outer diameter portion of the bearing portion (12a). Consequently, the level (h) of the oil surface for oil filled in the closed vessel (1) can be set so as to be near the upper end of the cover material (16). According to the present invention, the amount of oil filled in the closed vessel can be increased and the oil separation in the closed vessel can be efficiently made.

IPC 1-7

F04C 18/356; F04C 23/00

IPC 8 full level

F04B 17/00 (2006.01); F04B 39/00 (2006.01); F04C 18/356 (2006.01); F04C 23/00 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01); F04C 29/06 (2006.01); F04D 17/12 (2006.01); F04D 29/00 (2006.01)

CPC (source: EP KR)

A47L 13/16 (2013.01 - KR); B32B 5/18 (2013.01 - KR); B32B 27/36 (2013.01 - KR); F01C 21/108 (2013.01 - EP); F04C 18/3564 (2013.01 - EP); F04C 23/001 (2013.01 - EP); F04C 23/008 (2013.01 - EP); F04C 29/0092 (2013.01 - EP); F04C 29/02 (2013.01 - EP); F04C 29/028 (2013.01 - EP); F04C 29/065 (2013.01 - EP); F04C 29/068 (2013.01 - EP)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1580433 A2 20050928; EP 1580433 A3 20060719; BR PI0501167 A 20051101; CN 1670375 A 20050921; JP 2005264780 A 20050929; KR 101136678 B1 20120418; KR 20060043674 A 20060515; MX PA05002924 A 20050921; TW 200532114 A 20051001; TW I340794 B 20110421; US 2005214138 A1 20050929

DOCDB simple family (application)

EP 05005585 A 20050315; BR PI0501167 A 20050316; CN 200510055066 A 20050315; JP 2004076171 A 20040317; KR 20050021665 A 20050316; MX PA05002924 A 20050316; TW 94102992 A 20050201; US 8218805 A 20050316